POLICE are hunting a sex beast who left a 14-year-old girl so traumatised she has only been able to report the attack more than a year after it occurred.

Now aged 15, the girl was victim to what detectives describe as a "horrifying ordeal" in Drumchapel, Glasgow in December 2011.

The girl left a friend's house in Cloan Avenue and walked towards Garscadden Road via a footpath near Donald Dewar Sports Centre on Thursday, December 15, between 8pm and 9.30pm.

A man approached her on the bridge and started talking to her. As she got to the entrance of Southdeen Park, he pushed her into an alleyway.

He held her down on the ground and raped her, then ran off in an unknown direction and she made her way home.

The attacker is white, between 40 and 50-years-old, of stocky build and had short brown hair. He was wearing a grey jogging suit and a red Puffa jacket.

On his right thigh he has a tattoo of a ship's steering wheel and an Armani stud in his left ear.

Detective Inspector Dougie McKinlay appealed to the public for information about the attack or the attacker.

"This young girl was subjected to a horrifying ordeal and has been left so traumatised and devastated by it that she only found the courage to come forward to police last month," he said.

"I appreciate some time has passed since the crime occurred but I am asking people to think back, check their diaries. Would you have been in that area then? Do you go to or did you attend the Donald Dewar gym around that time? Do you recognise the description of the suspect?"

Anyone with information can call detectives at Drumchapel CID on 0141 532 3600 or Crimestoppers anonymously on 0800 555 111.